4224208661 has 2 divisors, whose sum is σ = 4224208662. Its totient is φ = 4224208660.

The previous prime is 4224208657. The next prime is 4224208669. The reversal of 4224208661 is 1668024224.

4224208661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4183631761 + 40576900 = 64681^2 + 6370^2 .

It is a cyclic number.

It is not a de Polignac number, because 4224208661 - 2² = 4224208657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4224208669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112104330 + 2112104331.

It is an arithmetic number, because the mean of its divisors is an integer number (2112104331).

Almost surely, 2^4224208661 is an apocalyptic number.

It is an amenable number.

4224208661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224208661 is an equidigital number, since it uses as much as digits as its factorization.

4224208661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 4224208661 is about 64993.9124918634. The cubic root of 4224208661 is about 1616.5226255247.

The spelling of 4224208661 in words is "four billion, two hundred twenty-four million, two hundred eight thousand, six hundred sixty-one".